Electric blower?

[tdewitt27]

Has anyone heard or used this item? I found it on ebay it claims to give 12 to 43 hp gains?! It this for real it also says it runs strictly off the car's 12v sysytem without any loss in power across the board. item number on ebay is 8039640192

[Bjornboy81]

http://www.gaownersclub.com/forum/showthread.php?threadid=52012&highlight=electric+supercharger

Although I'm not totally against it (in theory it should work) many will say it's junk. :)

[tdewitt27]

thanks that was some good info. I guess I will save my money

[RocketMan]

I don't like hat article and I wish ppl didn't have to see it. Its not entirely accurate and it also revolves around an example of an electric blower that is comparable to a full blown super charger. This isn't a good idea for purposes of comparison for 3 reasons I can think of right away:

A) You just can't compare something gas powered with something electric since gas has such a high energy density compared to.....well....see what I mean? i'm afraid to even say electricity since its a commodity, not a source. Electricity exists as a consequence of something else, unlike gas.

B) The advantages of electric blowers are much more obvious at low levels of boost since the difficulty in producing boost as a function of input energy is non-linear which means that at high levels of boost, dispite inefficiency, gas can provide the balls to turn the compressor, while electric motors become impractical, but for lighter applications they are very attractive

C) This article assumes the alternator will be providing the energy, which is inherently inefficient due to the electromechanical conversion losses mentioned. But if it were me, there's no way i'd set it up that way. Why would I? The great thing about electric is you can get instant power any time you want. No need to couple the system to anything. I'd use a battery that I charged at home or something. No efficiency loss there. And I dunno why this guy says electric motors are less than 50% efficient because that information is simply WRONG.

Maybe I seem like i'm defending the product. I'm not..really. I just like ppl to remain open to the idea instead of sucumbing to popular opinion and not giving the product a chance.

Lol this reminds me of this australian prick who claimed everything einstein did was wrong. Everyone who read his work and believed it became stupider for having read it which is just sad.

[Mike94SE]

And 1 psi is supposed to be a good thing?

[RocketMan]

what are you saying?....it sure as hell isn't a bad thing...unless i've been wrong all this time in thinking a positive boost gives you positive horsepower.

[96gaman18]

LOL!!! fake boost!!

[sunrunner_pei]

Originally posted by RocketMan
what are you saying?....it sure as hell isn't a bad thing...unless i've been wrong all this time in thinking a positive boost gives you positive horsepower.

Not when the engine is already sucking in more air than the electric 'supercharger' is blowing. In that case it's just another blockage in the airflow.

[sunrunner_pei]

A good discussion we already had on the subject: http://www.gaownersclub.com/forum/showthread.php?s=&threadid=51637&highlight=electric+AND+supercharger

[RocketMan]

I agree this topic's a bit redundant so, sorry for harping on it...i've got to disagree with you though. Any device which produces a positive "pressure head" cannot, by definition, be a blockage. It is quite easy to produce a flux of air that exceeds that which an engine draws in on its own but when this flux is greater, the pressure must rise and the pressure gradient is then very difficult to achieve. Thats why blowers require a lot of energy and its hard to get anything out of them. However its a trivial matter of making enough air to, not be a blockage....you just won't have any pressure.

Back to the electric ones, I think its pretty clear they do add a pressure head to the induction system. The question that seems to be under debate is whether this advantage is negligeable.

I just realized maybe you're talking about when the device isn't turned on (below WOT). In that case yeah your totally right. The way I see it though, if you're not flooring it, you must not want power at that particular moment so no harm done. Your gas mileage will probably make you happy in retrospect :)